Granted Patent B2

US 12,625,768 · App. 18/823,168 · Granted May 12, 2026

Inventors: Andrew Baptist (Mt. Pleasant, WI); Wesley Leggette (Chicago, IL); Jason K. Resch (Warwick, RI); Manish Motwani (Chicago, IL); John Quigley (Chicago, IL)

Assignee: Pure Storage, Inc.

G06F11/1076G06F3/0619G06F3/064G06F3/0659G06F3/067H04L67/1097H04L69/22H04L69/26

Abstract

Claims (34)

1 . A method for execution by one or more computing devices of a storage network, the method comprising:

error encoding a data object into a plurality of sets of encoded data slices;

determining an error condition associated with storage of a current version of the data object that is stored in a set of storage units of the storage network and is stored as a previous version of the data object, wherein the error condition is associated with one or more encoded data slices of a set of encoded data slices of the plurality of sets of encoded data slices; and

sending a rollback transaction request message to one or more storage units of the set of storage units, wherein the one or more storage units are associated with the error condition, and wherein the rollback transaction request message instructs the one or more storage units to promote the previous version to be a new current version of the data object such that the new current version of the data object is accessible in the storage network.

2 . The method of claim 1 further comprises:

instructing the one or more storage units to delete the current version of the data object.

3 . The method of claim 1 further comprises:

after sending the rollback transaction request message, instructing the one or more storage units to delete the one or more encoded data slices.

4 . The method of claim 1 , wherein the error condition comprises the one or more encoded data slices being associated with a locked encoded data slice.

5 . The method of claim 1 , wherein the error condition comprises one or more slice names associated with at least one encoded data slices of the one or more that are not stored in the set of storage units.

6 . The method of claim 1 , wherein the error condition comprises a transaction error associated with the current version of the data object.

7 . The method of claim 1 further comprises:

updating a slice status table to indicate the set of encoded data slices are associated with a write-lock status, wherein the write-lock status prevents further modification of the plurality of sets of encoded data slices until the error condition is corrected.

8 . The method of claim 1 further comprises:

maintaining storage of the current version of the data object until receiving a command from a computing device of the storage network.

9 . The method of claim 1 , wherein the error condition comprises:

determining, for a write request associated with the data object, that a number of write responses are less than a write threshold number.

10 . A computer readable memory comprises:

at least one memory element that stores operational instructions that, when executed by one or more computing devices of a storage network, cause the one or more computing devices to:

error encode a data object into a plurality of sets of encoded data slices;

determine an error condition associated with storage of a current version of the data object that is stored in a set of storage units of the storage network and is stored as a previous version of the data object, wherein the error condition is associated with one or more encoded data slices of a set of encoded data slices of the plurality of sets of encoded data slices; and

send a rollback transaction request message to one or more storage units of the set of storage units, wherein the one or more storage units are associated with the error condition, and wherein the rollback transaction request message instructs the one or more storage units to promote the previous version to be a new current version of the data object such that the new current version of the data object is accessible in the storage network.

11 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to instruct the one or more storage units to delete the current version of the data object.

12 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to:

after sending the rollback transaction request message, instruct the one or more storage units to delete the one or more encoded data slices.

13 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to determine the error condition includes the one or more encoded data slices being associated with a locked encoded data slice.

14 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to determine the error condition includes one or more slice names associated with one or more encoded data slices of the one or more encoded data slices that are not stored in the set of storage units.

15 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to determine the error condition includes a transaction error associated with the current version of the data object.

16 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to:

update a slice status table to indicate the set of encoded data slices are associated with a write-lock status, wherein the write-lock status prevents further modification of the plurality of sets of encoded data slices until the error condition is corrected.

17 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to:

maintain storage of the current version of the data object until receiving a command from a computing device of the storage network.

18 . The computer readable memory of claim 10 , wherein the at least one memory element stores further operational instructions that, when executed by the one or more computing devices, cause the one or more computing devices to determine the error condition exists by:

determining, for a write request associated with the data object, that a number of write responses are less than a write threshold number.

Assignments (3)

Continuity (10)

References Cited (166)